package conchmusic.conchmusicclient.mainUi;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.CursorLoader;
import android.content.Intent;
import android.content.Loader;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.provider.ContactsContract;
import android.support.annotation.NonNull;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.EditorInfo;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import org.json.JSONException;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;


import conchmusic.conchmusicclient.R;
import conchmusic.conchmusicclient.dao.ClientControl;
import conchmusic.conchmusicclient.dao.MyDBHelp;
import conchmusic.conchmusicclient.pojo.UpdatedData;
import conchmusic.conchmusicclient.pojo.User;
import conchmusic.conchmusicclient.util.Invoker;
import conchmusic.conchmusicclient.util.JsonBuilder;
import conchmusic.conchmusicclient.util.JsonParser;
import conchmusic.conchmusicclient.util.LoginCommand;

import static android.Manifest.permission.READ_CONTACTS;

/**
 * A login screen that offers login via email/password.
 */
public class LoginActivity extends AppCompatActivity implements LoaderCallbacks<Cursor> {

    /**
     * Id to identity READ_CONTACTS permission request.
     */
    private static final int REQUEST_READ_CONTACTS = 0;

    /**
     * A dummy authentication store containing known user names and passwords.
     * TODO: remove after connecting to a real authentication system.
     */
    private static final String[] DUMMY_CREDENTIALS = new String[]{
            "foo@example.com:hello", "bar@example.com:world"
    };

    // UI references.
    private AutoCompleteTextView mEmailView;
    private EditText mPasswordView;
    private View mProgressView;
    private View mLoginFormView;
    private Handler handler;
    private Invoker invoker;
    private LoginCommand loginCommand;
    private MyDBHelp myDBHelp;
    private ClientControl cc;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        // Set up the login form.
        mEmailView = (AutoCompleteTextView) findViewById(R.id.email);
        populateAutoComplete();
        myDBHelp = new MyDBHelp(this, "demon", null, 1);
        cc = new ClientControl(myDBHelp);
        mPasswordView = (EditText) findViewById(R.id.password);
        mPasswordView.setOnEditorActionListener(new TextView.OnEditorActionListener() {
            @Override
            public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
                if (id == R.id.login || id == EditorInfo.IME_NULL) {
                    attemptLogin();
                    return true;
                }
                return false;
            }
        });

        Button mEmailSignInButton = (Button) findViewById(R.id.email_sign_in_button);
        mEmailSignInButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                attemptLogin();
            }
        });

        mLoginFormView = findViewById(R.id.login_form);
        mProgressView = findViewById(R.id.login_progress);

        handler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                String flag = msg.getData().getString("jump");
                if (flag.equals("yes")) {
                    toastshow("登录成功");
                    jumpActivity();
                    finish();
                }
                if (flag.equals("false")) {
                    showProgress(false);
                }
                if (flag.equals("fail")) {
                    toastshow("登录失败，请重试");
                }
            }
        };
    }

    public void jumpActivity() {
        Intent intent = new Intent();
        intent.setClass(this, MainActivity.class);
        startActivityForResult(intent, 1);
    }

    private void populateAutoComplete() {
        if (!mayRequestContacts()) {
            return;
        }

        getLoaderManager().initLoader(0, null, this);
    }

    private boolean mayRequestContacts() {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
            return true;
        }
        if (checkSelfPermission(READ_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
            return true;
        }
        if (shouldShowRequestPermissionRationale(READ_CONTACTS)) {
            Snackbar.make(mEmailView, R.string.permission_rationale, Snackbar.LENGTH_INDEFINITE)
                    .setAction(android.R.string.ok, new View.OnClickListener() {
                        @Override
                        @TargetApi(Build.VERSION_CODES.M)
                        public void onClick(View v) {
                            requestPermissions(new String[]{READ_CONTACTS}, REQUEST_READ_CONTACTS);
                        }
                    });
        } else {
            requestPermissions(new String[]{READ_CONTACTS}, REQUEST_READ_CONTACTS);
        }
        return false;
    }

    /**
     * Callback received when a permissions request has been completed.
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        if (requestCode == REQUEST_READ_CONTACTS) {
            if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                populateAutoComplete();
            }
        }
    }


    /**
     * Attempts to sign in or register the account specified by the login form.
     * If there are form errors (invalid email, missing fields, etc.), the
     * errors are presented and no actual login attempt is made.
     */
    private void attemptLogin() {
        // Reset errors.
        mEmailView.setError(null);
        mPasswordView.setError(null);

        // Store values at the time of the login attempt.
        String userName = mEmailView.getText().toString();
        String password = mPasswordView.getText().toString();

        boolean cancel = false;
        View focusView = null;

        // Check for a valid password, if the user entered one.
        if (!TextUtils.isEmpty(password) && !isPasswordValid(password)) {
            mPasswordView.setError(getString(R.string.error_invalid_password));
            focusView = mPasswordView;
            cancel = true;
        }

        // Check for a valid email address.
        if (TextUtils.isEmpty(userName)) {
            mEmailView.setError(getString(R.string.error_field_required));
            focusView = mEmailView;
            cancel = true;
        }
        if (cancel) {
            // There was an error; don't attempt login and focus the first
            // form field with an error.
            focusView.requestFocus();
        } else {

            User u = new User();
            invoker = new Invoker();
            JsonBuilder jb = new JsonBuilder();
            u.setPassword(password);
            u.setUserName(userName);

            try {
                String jsonUser = jb.buildUser(u);
                Log.i("tj", "attemptLogin:"+jsonUser);
                loginCommand = new LoginCommand(getResources(), jsonUser);

            } catch (JSONException e) {
                e.printStackTrace();
            }
            invoker.setTransferCommand(loginCommand);
            new Thread() {
                @Override
                public void run() {
                    String jsonRecive = invoker.action();
                    JsonParser js = new JsonParser();
                    handlesend("jump", "false");
                    try {
                        String type = js.typeOf(jsonRecive);
                        if (type.equals("invalidInfo")) {
                            handlesend("jump", "fail");
                        } else {
                            UpdatedData ud = js.parseUpdatedData(jsonRecive);
                            cc.update(ud);
//                传给数据库
                            handlesend("jump", "yes");
                        }

                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            }.start();
            showProgress(true);
        }
    }

    public void setUserInfo(String uname, String password) throws IOException {
        String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/userInfo.txt";
        File file = new File(path);
        FileWriter fw = new FileWriter(file.getAbsoluteFile());
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write(uname + "@" + password);
        bw.flush();
        bw.close();
        fw.close();


    }

    public String[] getUserInfo() {
        String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/userInfo.txt";
        File file = new File(path);
        String userName = null;
        String password = null;
        String[] userInfo = null;
        try {
            FileInputStream fis = new FileInputStream(file);
            InputStreamReader isr = new InputStreamReader(fis, "GBK");
            BufferedReader br = new BufferedReader(isr);
            userInfo = br.readLine().split("@");
            userName = userInfo[0];
            password = userInfo[1];
            Log.i("get", "getUserInfo: " + userName + "......" + password);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return userInfo;
    }

    private boolean isEmailValid(String email) {
        //TODO: Replace this with your own logic
        return email.contains("@");
    }

    private boolean isPasswordValid(String password) {
        //TODO: Replace this with your own logic
        return password.length() > 4;
    }

    /**
     * Shows the progress UI and hides the login form.
     */
    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
    private void showProgress(final boolean show) {
        // On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
        // for very easy animations. If available, use these APIs to fade-in
        // the progress spinner.
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
            int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime);

            mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
            mLoginFormView.animate().setDuration(shortAnimTime).alpha(
                    show ? 0 : 1).setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
                }
            });

            mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
            mProgressView.animate().setDuration(shortAnimTime).alpha(
                    show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
                }
            });
        } else {
            // The ViewPropertyAnimator APIs are not available, so simply show
            // and hide the relevant UI components.
            mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
            mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
        }
    }

    @Override
    public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
        return new CursorLoader(this,
                // Retrieve data rows for the device user's 'profile' contact.
                Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
                        ContactsContract.Contacts.Data.CONTENT_DIRECTORY), ProfileQuery.PROJECTION,

                // Select only email addresses.
                ContactsContract.Contacts.Data.MIMETYPE +
                        " = ?", new String[]{ContactsContract.CommonDataKinds.Email
                .CONTENT_ITEM_TYPE},

                // Show primary email addresses first. Note that there won't be
                // a primary email address if the user hasn't specified one.
                ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
    }

    @Override
    public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
        List<String> emails = new ArrayList<>();
        cursor.moveToFirst();
        while (!cursor.isAfterLast()) {
            emails.add(cursor.getString(ProfileQuery.ADDRESS));
            cursor.moveToNext();
        }

        addEmailsToAutoComplete(emails);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> cursorLoader) {

    }

    private void addEmailsToAutoComplete(List<String> emailAddressCollection) {
        //Create adapter to tell the AutoCompleteTextView what to show in its dropdown list.
        ArrayAdapter<String> adapter =
                new ArrayAdapter<>(LoginActivity.this,
                        android.R.layout.simple_dropdown_item_1line, emailAddressCollection);

        mEmailView.setAdapter(adapter);
    }

    public void registJump(View view) {
        Intent intent = new Intent();
        intent.setClass(this, RegistActivity.class);
        startActivity(intent);
        finish();
    }

    public void notRegistJump(View view) {
        Intent intent = new Intent();
        intent.setClass(this, MainActivity.class);
        startActivity(intent);
    }


    private interface ProfileQuery {
        String[] PROJECTION = {
                ContactsContract.CommonDataKinds.Email.ADDRESS,
                ContactsContract.CommonDataKinds.Email.IS_PRIMARY,
        };

        int ADDRESS = 0;
        int IS_PRIMARY = 1;
    }

    public void toastshow(String story) {
        Toast toast = Toast.makeText(getApplicationContext(), story, Toast.LENGTH_LONG);
        toast.setGravity(Gravity.CENTER, 0, 0);
        LinearLayout toastView = (LinearLayout) toast.getView();
        ImageView imageCodeProject = new ImageView(getApplicationContext());
        imageCodeProject.setImageResource(R.mipmap.ic_launcher);
        toastView.addView(imageCodeProject, 0);
        toast.show();
    }
    @Override
    public void onBackPressed() {
        super.onBackPressed();
        this.finish();
    }
    public void handlesend(String key, String val) {//给handler传消息的函数
        Message msg = new Message();
        Bundle bundle = new Bundle();
        bundle.putString(key, val);
        msg.setData(bundle);
        handler.sendMessage(msg);
    }
}

